Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

2022-01-04 Thread Ralph Stirling
That AR3 robot is indeed interesting. In the event that anyone else wants to know the specs on the robot, here is what I found on page 298 of the manual: Reach – 24.75 inches (62.9cm) Payload – 4.15 lbs (1.9kg) Repeatability - .2mm Robot weight (aluminum) – 27lbs (12.25kg) Enclosure weight –

Re: [Emc-users] Very good software backlash control demo.

2022-01-04 Thread dave engvall
Hi, I ran across an article by one of the servo drive firms that said the using two sensors/axis improved motion. I think they used a resolver on the drive and an encoder on the ball screw. While this improves motion that assumes you have very good ball screws. I think that a better approach

Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

2022-01-04 Thread Rob C
Interesting looking at the AR2/AR3 https://www.anninrobotics.com/ On Tue, 4 Jan 2022 at 18:14, andy pugh wrote: > On Tue, 4 Jan 2022 at 17:41, Robin Szemeti via Emc-users > wrote: > > > > Out of interest, how is PathPilot related to LinuxCNC? > > It's LinuxCNC with their own GUI on top. But

Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

2022-01-04 Thread andy pugh
On Tue, 4 Jan 2022 at 17:41, Robin Szemeti via Emc-users wrote: > > Out of interest, how is PathPilot related to LinuxCNC? It's LinuxCNC with their own GUI on top. But maybe v2.7 as I don't _think_ that they have the joints-axes changes in. -- atp "A motorcycle is a bicycle with a pandemonium

Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

2022-01-04 Thread Robin Szemeti via Emc-users
Out of interest, how is PathPilot related to LinuxCNC? On Tue, 4 Jan 2022 at 17:03, Rick Moscoloni wrote: > Nice Work Done by Them! > https://www.youtube.com/watch?v=xFjR_Kr6JOE > > El lun, 3 ene 2022 a las 1:21, Ralph Stirling (< > ralph.stirl...@wallawalla.edu>) escribió: > > > Tormach has an

Re: [Emc-users] Tormach writing open sorce ROS2/Machiekit/LCNC bridge.

2022-01-04 Thread Rick Moscoloni
Nice Work Done by Them! https://www.youtube.com/watch?v=xFjR_Kr6JOE El lun, 3 ene 2022 a las 1:21, Ralph Stirling (< ralph.stirl...@wallawalla.edu>) escribió: > Tormach has an interesting 6-axis robot fully controlled by ROS, > and multiple CNC machines running Linuxcnc/Machinekit, so it > makes

Re: [Emc-users] Very good software backlash control demo.

2022-01-04 Thread gene heskett
On Monday, January 3, 2022 11:45:13 PM EST Sam Sokolik wrote: > I think it is just easy to have 2 pid's and sum them.. (one on the motor > encoder with P,D and feed forward - the other with scales and the I term) > Then you are not re-writing the pid component for some odd corner case. > > sam